aeronautica86

for sure; this definately sounds like a hell of a turbo

SchnellerUmsetzer

Yea looking forward to reading about this Turbo. However in about one week I will be in Germany, but Still cool stuff!

David Floyd

facboy

i wanna know when it's gonna be generally available! starting to save lol.

Rock

Lart! You *******! Youve ruined yet another pair of rocks trousers

Chris White

Which ever - I should just come down and shoot the bull some time!! If you have something interesting to dyno that would give me a reason to drive over!

Chris

toddk911

So is the new turbo flows making the big difference or the big valves/head etc.?

Porschefile

Ok, since no one else is stepping up, I call bull****. You are basically saying you'll make twice as much power as stock with nearly the same spool up as stock. This isn't physically possible. I wish my friend let me measure his stage 3, because I fail to see where this turbo is large enough to push 600+rwhp. That's roughly 60+lb/min of air. This turbo would have to be comparable to a gt35r in power output, and there's no way one of those would ever be that responsive on a 2.5l. I can understand 1 bar by ~3.8k rpm or a little higher. If you were spooling a 60#/min turbo that quickly it would surge badly on a 2.5l. There are plenty of dynos on the net of larger engines producing similar power numbers with more lag than you are describing.

Driftomagnifico

So wait.

You are going to have roughly the same spool-up as a factory turbocharger and push 600whp on an engine that has very little RPM band? Something does not add up.

You do realize that the turbocharger will have to reach a much higher shaft RPM to produce 1 BAR with the larger valves and camshaft, assuming the engine's VE is even increased at such a low operational speed. I doubt you can substantiate enough exhaust energy to produce 1 BAR at 3000 RPM with a turbo that pushes 500whp efficiently.

How about you post the specifications of the turbocharger to begin with.

Driftomagnifico

Unless the 944 has some rediculously undersized valves that create supersonic fluid movement at the valve you aren't going to gain much in terms of low end CFM. Spreading the cams duration out and maximizing valve moments will net a gain in engine VE but not at 2500 RPM. You are hard pressed to achieve higher engine VE's at such low RPMs by altering stock flows unless they are overly restrictive or highly turbulent.

aeronautica86

not gonna happen

I guess a dyno chart will just have to do, as always

pole position

The only answers you are going to get is insults or my tuner is the best and the whole world beggs for his services but he declines because he loves 951's so much. He could not break 400 whp ( yeah could not turn up the boost) on pump (and e-coast pump is much better than w-coast) but posted a 500 + wheeldyno sheet with the boost turned to max (not disclosed) on enhanced racegas aka a dyno queen run. Whoever believes that those dyno settings will survive sustained loads in the real world or god forbid on a racetrack are incredible naive.

aeronautica86

lets start the **** talking when you post a 500rwhp 951 dyno chart

special tool

Yes, the dyno will show the power and the relative spoolup improvement.

We should not compare the latest technology, leading edge turbos specifically designed for the 951 to a turbo designed in the 60's for a diesel truck - which has very high static compression. Take it from me, I know diesel turbos.....

IanS

I assume it'll end up being a modified GT30 series, based on the fact that its a pain to fit and they spool quickly. I would think a standard GT3071R would hit 1bar around 3000rpm, so if john's turbo mods are really hot stuff, maybe he can get a 3076 or even a 3040 to spool by 3k?

Admittedly, it sounds like a lofty goal, but I'd rather see someone aim high and come close than strive to be mediocre.